67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
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#include <rtthread.h>
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#include <lwip/sockets.h>
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#define SERV_PORT 10012
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#define BUF_SIZE 1024
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static const char send_data[] = "This is UDP Server from RT-Thread.";
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void udpserver6(void)
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{
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int sockfd;
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struct sockaddr_in6 server_addr6;
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struct sockaddr_in6 client_addr6;
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int bytes_read;
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char *recv_data;
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rt_uint32_t addr_len;
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recv_data = rt_malloc(BUF_SIZE);
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if(recv_data == RT_NULL)
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{
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rt_kprintf("No memory\n");
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return ;
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}
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if((sockfd = socket(AF_INET6, SOCK_DGRAM, 0)) == -1)
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{
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rt_kprintf("Socket error\n");
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rt_free(recv_data);
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return ;
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}
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server_addr6.sin6_family = AF_INET6;
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server_addr6.sin6_port = htons(SERV_PORT);
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memcpy(server_addr6.sin6_addr.s6_addr, IP6_ADDR_ANY, 16);
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if(bind(sockfd, (struct sockaddr *)&server_addr6, sizeof(struct sockaddr)) == -1)
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{
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rt_kprintf("Bind error\n");
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rt_free(recv_data);
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return ;
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}
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rt_sprintf(recv_data, "%4d", SERV_PORT);
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rt_kprintf("UDPServer Waiting for client on port %s...\n", recv_data);
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addr_len = sizeof(struct sockaddr);
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while(1)
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{
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bytes_read = recvfrom(sockfd, recv_data, BUF_SIZE - 1, 0, (struct sockaddr *)&client_addr6, &addr_len);
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recv_data[bytes_read] = '\0';
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rt_kprintf("\n(%s, %d) said:", inet6_ntoa(client_addr6.sin6_addr), ntohs(client_addr6.sin6_port));
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rt_kprintf("%s", recv_data);
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if(strcmp(recv_data, "exit") == 0)
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{
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closesocket(sockfd);
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rt_free(recv_data);
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break;
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}
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}
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return ;
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}
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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FINSH_FUNCTION_EXPORT(udpserver6, startup udp server via ipv6);
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#endif
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